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Northwest Africa 11978
Basic information Name: Northwest Africa 11978
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11978
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 1159 g
Meteoritical Bulletin:  MB 107  (2018)  L3-6
Recommended:  L3-6    [explanation]

This is 1 of 61 approved meteorites classified as L3-6.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 9 Oct 2018
Writeup from MB 107:

Northwest Africa 11978 (NWA 11978)

(Northwest Africa)

Purchased: Nov. 2015

Classification: Ordinary chondrite (L3-6)

History: Purchased by Li Bofang from a Morrocoan dealer at the mineral show in Beijing in Nov. 2015.

Physical characteristics: Brown 1159 g stone of about 10 cm in diameter.

Petrography: (R. Bartoschewitz, Bart, B. Li, Beijing) cut surface shows brown matrix with poor to well defined chondrules of 0.3 - 5 mm of various types (PO, PP, POP, RP), and dark xenolites. Metal is nearly complete oxidized.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa23.2±2.0 (n=23); pyroxene Fs17.0±5.6Wo1.5±1.4 (n=13); Ca-pyroxene Fs26.9Wo73.1 (n=1). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 4.48.

Classification: ordinary chondrite (L3-6)

Specimens: 20.1 g on deposit at Kiel, B. Li holds the main mass and 67 g with Bart.

Data from:
  Table 0
  Line 0:
Place of purchase:Beijing
Date:P Nov. 2015
Mass (g):1159
Shock stage:S3
Weathering grade:W4
Fayalite (mol%):23.2±2.0 (n=23)
Ferrosilite (mol%):17.0±5.6 (n=13)
Wollastonite (mol%):1.5±1.4
Magnetic suscept.:4.48
Classifier:R. Bartoschewitz, B. Li
Type spec mass (g):20.1
Type spec location:Kiel
Main mass:Li Bofang, Beijing
Comments:NWA-LB006; submitted by R. Bartoschewitz
   and collections
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)
Beijing: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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